As an ex DAOC player I'm a huge fan of World PVP and I really enjoy sPVP with my guild which is mostly comprised of PVP people I met in WoW. I find it much more compelling than the games PVE content. I can see how someone would burn out after awhile on the PVE, it can only take you so far. The PVP is what has kept me going on and off since the games launch, you will always find more variety and challenge in other players as opposed to game mechanics and systems.